Desk lamp



FIG. 1 is a first perspective view of a desk lamp showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of portion 9 in FIG. 1; and,

FIG. 10 is an enlarged view of portion 10 in FIG. 3.

The broken lines in the drawings illustrate portions of the desk lamp which form no part of the claimed design. 

CLAIM The ornamental design for a desk lamp, as shown and described. 